Footwear
| Fri 19 Jun 2026
Beijing, June 19 -- China Oilfield Services has sought patent for Anti-rotation Plug-in Float Shoe. This invention was developed by Jiao Guoshan, Xu Jianqiang, Liu Yujie, Xie Xiongwu, Cui Xin, Zhao Donghui, Ma Liping, Wu Lisheng, Guo Shunxing, Yan Peiyu, Luo Jing and Shang Lei.
The patent application number is CN202610126228 ..